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feat: start nemo gym and other environments with cached venvs #1927

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Merged
terrykong merged 1 commit into from
Feb 11, 2026
Merged

feat: start nemo gym and other environments with cached venvs #1927

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16 changes: 14 additions & 2 deletions nemo_rl/environments/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@

from nemo_rl.distributed.ray_actor_environment_registry import get_actor_python_env
from nemo_rl.environments.interfaces import EnvironmentInterface
from nemo_rl.utils.venvs import create_local_venv_on_each_node


# Environment registry entry schema.
Expand Down Expand Up @@ -105,10 +106,21 @@ def create_env(env_name: str, env_config: dict) -> EnvironmentInterface:
)
actor_class_fqn = ENV_REGISTRY[env_name]["actor_class_fqn"]
actor_class = get_object(actor_class_fqn)
actor_py_exec = get_actor_python_env(actor_class_fqn)
extra_env_vars = {}
if actor_py_exec.startswith("uv"):
actor_py_exec = create_local_venv_on_each_node(
actor_py_exec,
actor_class_fqn,
)
extra_env_vars = {
"VIRTUAL_ENV": actor_py_exec,
"UV_PROJECT_ENVIRONMENT": actor_py_exec,
}
env = actor_class.options( # type: ignore # it's wrapped with ray.remote
runtime_env={
"py_executable": get_actor_python_env(actor_class_fqn),
"env_vars": dict(os.environ),
"py_executable": actor_py_exec,
"env_vars": {**dict(os.environ), **extra_env_vars},
}
).remote(env_config)
return env
Expand Down
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